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2018 World air quality report
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Rank | City | 2017 AVG | 2018 AVG | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | ![]() Anderson, USA | 23.5 | 27.8 | 21.1 | 15.3 | 23.6 | - | - | 15.5 | 30.5 | 78 | 23.6 | 15.9 | 33.9 | 25.6 |
2 | ![]() Medford, USA | 15 | 22 | 12.6 | 9.1 | 7.8 | - | - | - | 74.4 | 64.2 | 19.3 | 6.6 | 11.9 | 13.1 |
3 | ![]() Three Rivers, USA | 20.4 | 20.8 | 9.9 | 14.2 | 8.1 | 59.3 | 15.1 | 17.4 | 40.2 | - | 13.5 | 14.4 | 31.8 | 8.9 |
4 | ![]() Yosemite Valley, USA | 13.3 | 20.4 | 8.3 | 9 | 9.2 | 9.2 | 11.8 | 8.9 | 72.4 | 65.2 | 9.9 | 10.2 | 16.8 | 10.6 |
5 | ![]() Portola, USA | 19.1 | 20.4 | 33.8 | 29 | 22 | 13.3 | 7.2 | 5.4 | 12.8 | 33.4 | 11.4 | 11.7 | 25.8 | 27.4 |
6 | ![]() Klamath Falls, USA | 13.2 | 18.9 | 11.9 | 11.3 | 6.6 | 5.4 | 4.2 | 3.8 | 43.8 | 70.1 | 20 | 10.1 | 15.3 | 13 |
7 | ![]() Yuba City, USA | 12.6 | 18.2 | 17.6 | 13.4 | 8.7 | 9.2 | 9.5 | 10.7 | 15.3 | 27 | 15 | 12.1 | 64.2 | 14.7 |
8 | ![]() Paradise, USA | 6.8 | 17.9 | 7.9 | 6.5 | 4.9 | 5.1 | 6 | 6.3 | 14.5 | 23.7 | 7.6 | 6.8 | 206.8 | - |
9 | ![]() Stockton, USA | 12.5 | 17.7 | 21.9 | 17.3 | 9.6 | 11.1 | 8.1 | 9.5 | 13.8 | 22 | 13.4 | 12.2 | 52 | 20.4 |
10 | ![]() Chico, USA | 12.8 | 17.6 | 15.8 | 7.6 | 6.4 | 7.5 | 9.5 | 9.6 | 16.4 | 29.7 | 14.1 | 9 | 75.1 | 12.6 |
11 | ![]() Visalia, USA | 16.8 | 17.6 | 29.5 | 24.2 | 8.2 | 9 | 9.2 | 10.5 | 15.9 | 26.6 | 13.6 | 13.9 | 30.2 | 20.8 |
12 | ![]() Turlock, USA | 13.1 | 17.3 | 22.6 | 16.2 | 9.2 | 8.4 | 7.4 | 10.4 | 14.9 | 23.9 | 13.4 | 12.6 | 47.3 | 19.9 |
13 | ![]() Gridley, USA | 12.3 | 16.9 | 12.6 | 12.8 | 7 | 7.8 | 9 | 10.8 | 14.7 | 26.1 | 13.6 | 12.9 | 63.9 | 11.4 |
14 | ![]() Porterville, USA | 15.3 | 16.8 | 25.8 | 19.5 | 7.4 | 11.8 | 9.9 | 10.2 | 18.7 | 26.2 | 12.1 | 11.6 | 24.9 | 19.5 |
15 | ![]() Twisp, USA | 18.8 | 16.6 | 24 | 11.3 | 10.5 | 5.4 | 5.5 | 3.2 | 7.4 | 68.1 | 18.2 | 11 | 17.6 | 15.5 |
16 | ![]() California City, USA | 16.3 | 16.4 | 22.1 | 16.4 | 12.3 | 15.4 | 11.3 | 15.1 | 15.2 | 18.5 | 17.6 | 15.1 | 17.8 | 21.2 |
17 | ![]() La Mirada, USA | - | 16 | - | - | - | - | - | 13.9 | 13.2 | 18.3 | 18.6 | 14.2 | 14.8 | 18.6 |
18 | ![]() Reseda, USA | 17.3 | 16 | 16.2 | 15 | 13.4 | 17.7 | 18.5 | 22.8 | 17.7 | 19.9 | 13.8 | 9.8 | 13.1 | 13.5 |
19 | ![]() Bakersfield, USA | 16.2 | 15.9 | 32.4 | 21.6 | 8.6 | 7.9 | 7.6 | 8.8 | 12.4 | 20.6 | 11.6 | 11 | 27.8 | 20 |
20 | ![]() Upland, USA | 17.6 | 15.8 | 16.9 | 12.8 | 13.6 | 17.5 | 15.4 | 20.3 | 21.5 | 24 | 16.7 | 9 | 9.7 | 9.8 |
21 | ![]() Merced, USA | 13.4 | 15.3 | 20.9 | 17.4 | 6.8 | 7.8 | 7.5 | 8.8 | 13.5 | 24.4 | 13.5 | 12.3 | 31.3 | 18.7 |
22 | ![]() Modesto, USA | 13 | 15.1 | 20.8 | 13.9 | 7.9 | 7.1 | 6.6 | 7.9 | 11.4 | 20.2 | 11.4 | 10 | 46.1 | 16.7 |
23 | ![]() Libby, USA | 15.1 | 14.9 | 17.8 | 12.7 | 14.1 | 8.7 | 6.9 | 5.4 | 8.4 | 43.4 | 10.4 | 13 | 21.2 | 15.3 |
24 | ![]() Ashland, USA | 10.9 | 14.8 | 6.4 | 5 | 4.1 | 3.9 | 4.4 | 3.9 | 37.7 | 65 | 18.3 | 6.1 | 7.5 | 7.1 |
25 | ![]() Williams, USA | 6.9 | 14.8 | 10.9 | 8.2 | 4.2 | 3.8 | 5.6 | 7 | 18 | 42.5 | 13.9 | 7.9 | 26 | 5.5 |
26 | ![]() Sacramento, USA | 11.5 | 14.7 | 17.2 | 13.4 | 6.9 | 7 | 6.8 | 9.6 | 9.6 | 17.1 | 8.1 | 7.3 | 61.8 | 12.6 |
27 | ![]() San Andreas, USA | 12.9 | 14.6 | 13.6 | 14 | 9.3 | 10.3 | 11.3 | 12.3 | 17.6 | 29.6 | 13 | 10 | 16.6 | 16.6 |
28 | ![]() Milpitas, USA | - | 14.5 | 14.1 | 4.8 | 4.2 | 6.5 | 5.2 | 5.6 | 10.1 | 18.3 | 11.2 | 9.1 | 58.4 | 9.4 |
29 | ![]() Los Angeles, USA | 16.1 | 14.4 | 17.5 | 14 | 10.7 | 15.6 | 12.5 | 16.6 | 14.8 | 17.2 | 15.5 | 11.8 | 15 | 11.7 |
30 | ![]() Fresno, USA | 10.9 | 14 | 26.8 | 20.7 | 7.4 | 7.5 | 7.2 | 8.6 | 12 | 22.7 | 10.1 | 8.1 | 25.2 | 11.7 |
31 | ![]() Kern, USA | 13 | 13.8 | 32.4 | 22.3 | 8.4 | 8 | 7.5 | 8.6 | 11.9 | 18.7 | 10.1 | 8.9 | 15.7 | 12.3 |
32 | ![]() Shady Cove, USA | 12.1 | 13.7 | 6.5 | 4.7 | 3.7 | 3.8 | 3.8 | 3.3 | 36.2 | 54.3 | 19.3 | 5.9 | 7.5 | 8.2 |
33 | ![]() Stanislaus, USA | 12.9 | 13.6 | 20.7 | 14 | 7.8 | 7.1 | 6.6 | 7.9 | 11.4 | 19.5 | 11.2 | 10.2 | 33.2 | 17.1 |
34 | ![]() Long Beach, USA | 14.6 | 13.5 | 21.6 | 15 | 9.4 | 12.8 | 7.6 | 10.3 | 11.2 | 14.9 | 13.9 | 12.3 | 16.3 | 16.6 |
35 | ![]() Montgomery, USA | 13.3 | 13.5 | - | - | 15.6 | - | 14.3 | 13 | 12.9 | 13.7 | 13.2 | 13.7 | 13.4 | 12.8 |
36 | ![]() Oakland, USA | 11.4 | 13.5 | 15.6 | 10.9 | 9.1 | 10.6 | 7.6 | 10.7 | 8.5 | 13.8 | 12.4 | 10 | 43.6 | 9 |
37 | ![]() Colville, USA | 19.1 | 13.3 | 23.5 | 10.3 | 5.4 | 3.2 | 4.4 | 3.1 | 7.4 | 43.2 | 8.6 | 13.5 | 21.9 | 18.4 |
38 | ![]() Cave Junction, USA | 12 | 13.3 | 7.4 | 11.1 | 7 | 4.6 | 4.1 | 3.4 | 25.1 | 39.6 | 13.1 | 6.4 | 17.3 | 13.8 |
39 | ![]() Concord, USA | 12.4 | 13.3 | 16.1 | 11.5 | 10.3 | 10.6 | 9.2 | 14.1 | 13.2 | 15.3 | 7.5 | 6.1 | 37.7 | 8 |
40 | ![]() Vallejo, USA | 11.9 | 13 | 15.2 | 10.7 | 7.6 | 9 | 8.2 | 9.2 | 7.2 | 12.7 | 10 | 9.1 | 43.6 | 11.5 |
41 | ![]() Calexico, USA | 13.6 | 12.9 | 17.2 | 16.1 | 8.7 | 13.5 | 10.9 | 14.2 | 12.5 | 11 | 9.8 | 7.9 | 17.1 | 15.6 |
42 | ![]() Glendora, USA | 11.5 | 12.9 | 10.8 | 9.1 | 8.6 | 12.9 | 10.3 | 16.9 | 16.8 | 19.7 | 16.9 | 11.4 | 12 | 9.9 |
43 | ![]() Woodland, USA | 10 | 12.9 | 13.9 | 8.6 | 8.7 | 9.8 | 7.8 | 8.4 | 10.5 | 19.5 | 6.6 | 7.7 | 41.3 | 8.9 |
44 | ![]() Grants Pass, USA | 13.7 | 12.8 | 7.9 | 9.2 | 5.4 | 4.7 | 4.3 | 3.4 | 24.2 | 40 | 15.9 | 6.4 | 14.3 | 11.9 |
45 | ![]() Riverside, USA | 13.8 | 12.8 | 14.2 | 10.4 | 8.4 | 13.4 | 12.1 | 16.9 | 13.4 | 15.3 | 14.6 | 10 | 11.8 | 12.4 |
46 | ![]() San Pablo, USA | 10.9 | 12.8 | 13.5 | 7.7 | 6.9 | 10.1 | 8.5 | 11 | 8.1 | 13.7 | 12.2 | 9.1 | 42.6 | 10.4 |
47 | ![]() Omak, USA | 11.6 | 12.7 | 12.2 | 7.5 | 6.4 | 4.5 | 4.5 | 3.3 | 8.1 | 56.1 | 7.1 | 10.4 | 15 | 11.3 |
48 | ![]() Pinehurst, USA | 14.8 | 12.7 | 22.4 | 13.9 | 12.1 | 8.5 | 8 | 3.7 | 6.7 | 25 | 6.6 | 10.6 | 19.4 | 13.7 |
49 | ![]() San Francisco, USA | 10 | 12.6 | 14.8 | 10.3 | 7.2 | 8.4 | 5.8 | 7.9 | 7.2 | 12.1 | 9.6 | 7.8 | 50.2 | 9.2 |
50 | ![]() Sunnyside, USA | 17.3 | 12.5 | 19 | 5.8 | 5.3 | 5.3 | 8.3 | 5.4 | 10.6 | 39.3 | 9.9 | 13.7 | 16 | 10.3 |